update instagram example

Author: georgio

examples/provider/instagram.php

@@ -1,57 +1,41 @@
 <?php
 
-/**
- * Example of retrieving an authentication token of the Instagram service.
- *
- * PHP version 5.4
- *
- * @author     David Desberg <david@daviddesberg.com>
- * @author     Pieter Hordijk <info@pieterhordijk.com>
- * @author     Hannes Van De Vreken <vandevreken.hannes@gmail.com>
- * @license    http://www.opensource.org/licenses/mit-license.html  MIT License
- */
-
 use OAuth\Common\Consumer\Credentials;
+use OAuth\Common\Http\Client\CurlClient;
+use OAuth\Common\Http\Exception\TokenResponseException;
 use OAuth\Common\Storage\Session;
+use OAuth\Helper\Example;
 use OAuth\OAuth2\Service\Instagram;
 
-/**
- * Bootstrap the example.
- */
-require_once __DIR__ . '/bootstrap.php';
 
-// Session storage
-$storage = new Session();
+require_once __DIR__.'/../bootstrap.php';
 
-// Setup the credentials for the requests
-$credentials = new Credentials(
-    $servicesCredentials['instagram']['key'],
-    $servicesCredentials['instagram']['secret'],
-    $currentUri->getAbsoluteUri()
-);
-
-$scopes = ['basic', 'comments', 'relationships', 'likes'];
-
-// Instantiate the Instagram service using the credentials, http client and storage mechanism for the token
-/** @var Instagram $instagramService */
-$instagramService = $serviceFactory->createService('instagram', $credentials, $storage, $scopes);
-
-if (!empty($_GET['code'])) {
-    // retrieve the CSRF state parameter
-    $state = $_GET['state'] ?? null;
-
-    // This was a callback request from Instagram, get the token
-    $instagramService->requestAccessToken($_GET['code'], $state);
-
-    // Send a request with it
-    $result = json_decode($instagramService->request('users/self'), true);
-
-    // Show some of the resultant data
-    echo 'Your unique instagram user id is: ' . $result['data']['id'] . ' and your name is ' . $result['data']['full_name'];
-} elseif (!empty($_GET['go']) && $_GET['go'] === 'go') {
-    $url = $instagramService->getAuthorizationUri();
-    header('Location: ' . $url);
-} else {
-    $url = $currentUri->getRelativeUri() . '?go=go';
-    echo "<a href='$url'>Login with Instagram!</a>";
+$helper = new Example();
+$storage = new Session();
+$client = new CurlClient();
+
+$helper->setTitle('Instagram');
+
+
+if (empty($_GET)) {
+    echo $helper->getContent();
+} elseif (!empty($_GET['key']) && !empty($_GET['secret']) && $_GET['oauth'] !== 'redirect') {
+    $credentials = new Credentials($_GET['key'], $_GET['secret'], $helper->getCurrentUrl());
+    $service = new Instagram($credentials, $client, $storage);
+    echo $helper->getHeader();
+    echo '<a href="'.$service->getAuthorizationUri().'">get access token</a>';
+    echo $helper->getFooter();
+} elseif (!empty($_GET['code'])) {
+    $credentials = new Credentials($_GET['key'], $_GET['secret'], $helper->getCurrentUrl());
+    $service = new Instagram($credentials, $client, $storage);
+
+    echo $helper->getHeader();
+    try {
+        $token = $service->requestAccessToken($_GET['code']);
+        echo 'access token: ' . $token->getAccessToken();
+    } catch (TokenResponseException $exception) {
+        $helper->getErrorMessage($exception);
+    }
+    echo $helper->getFooter();
 }
+